Focal length/Aperture: 50mm f/1.8; Lens construction: 6 elements in 5 groups
Picture angle: 46°; Diaphragm: Automatic
Aperture scale: f/1.8 - f/22 on both standard and aperture-direct-readout scale
Exposure measurement: Via full aperture method; meter coupling shoe provided for non-Ai Nikon SLR cameras for stopped down or semi-auto full aperture metering (with capable models)
Distance scale: Graduated in meters and feet from 0.45m (1.5 ft) to infinity (OO)
Weight: 220g; Dimensions: 63.5mm dia. x 48mm long (overall); 37mm extension from flange
Attachment size: 52mm (P = 0.75); Front lens cap: Snap-On
Lens hood: Snap-On (MS-II ), HS-6 (metal), rubber screw-in (HR-1); Lens case: CL-34A; No. 61; CP-1;
Teleconverter(s): usable with TC-1 2X (based on Nikon models); TC-200, TC-201S but not advisable.